Everyone knows what a thermometer is, some of you have heard the word “hygrometer,” but many probably do not suspect what this object is and what its purpose is. Let's try to figure it out.
Hygrometer: definition, types and purpose
A hygrometer is a device for measuring air humidity. There are various types and types, designs and functional purpose. We are interested in a room hygrometer, which can be used separately or as part of a home weather station. Common instrument companies: Testo, Tefal and others.
According to the principle of the device, the following types of hygrometers are distinguished:
Weighted. Determines the quantitative content of water vapor in grams per cubic meter of air.
The psychrometric hygrometer is based on measuring the difference in readings between wet and dry thermometers.
Hair. It uses the property of a human hair, which shortens and lengthens with a decrease and increase in relative humidity, respectively.
Capacitor. This room hygrometer is based on the technology of cooling the air to the so-called “dew point” with condensation of water vapor.
To measure the absolute humidity in the laboratory, weight and condensation hygrometers are mainly used . Hair hygrometers are effective at low temperatures - a psychrometer, say, stops working at -10 degrees.
To measure humidity in apartments, psychrometric hygrometers are usually used. They are easy to use, reliable and optimal for measurements at positive temperatures. Hair devices also have a certain popularity.
It is up to you to buy an electronic (digital) hygrometer or a mechanical, wall or desktop hygrometer. Our goal is to show all the benefits of such an acquisition.
What benefits does this device bring?
Hygrometers are not very popular now, but in vain. Most people cannot even imagine how useful this amazing parting can be.
First of all, it is indispensable for forecasting weather conditions. For this purpose, a room hygrometer is ideal, which can be installed in a forest house or cottage, at a recreation center, etc. Positioning it in the room so that the hygrometer is in contact with the air from the street.
A hygrometer is also very useful in determining the humidity in your house or apartment, especially if it has small children. So, if a child does not cough for a long time, and there is no temperature, you need to maintain a slightly increased humidity. If the apartment is cold for some reason, lower the humidity. An inexpensive room hygrometer is simply an indispensable assistant in effectively regulating the humidity of a living room.
There is also the benefit of this amazing device. You can use it to control humidity in the cellar, while preserving the beneficial properties of valuable food products for a long time.
How is a hygrometer arranged? Next, we consider the principle of its operation on the example of one of the many existing models of hygrometers.
The device and the principle of operation on the example of a thermohygrometer vit 1
This appliance is made of polystyrene or materials of similar properties. Hygrometer Vit 1 is a psychrometric device. The basis of his work is the relationship between air humidity and the difference in the readings of wet and dry thermometers that are in thermodynamic equilibrium by the environment.
Two thermometers with scales, a glass feeder filled with distilled water and a psychrometric table are attached to the base of Vit 1. A humidified thermometer takes moisture from the feeder through a wick.
We take readings from both thermometers, determine the difference in readings, and from the readings of dry and the difference between dry and wet thermometers, we determine the humidity according to the psychrometric table.
This room hygrometer is simply indispensable at home.